Selvage-motion fo looms.



PATENTEO ONE 19,1906.

v O. P. KOPER.

SBLVAGE MOTION POR LOOMs.

APPLIOATI-ON FILED JUNE 19,1905.

3 SHEETS-SHEET l.

Eme/7622771 ANDREW` s. ummm co., wmoqmcsmwnsns. wmsnmmcu, v. c.

PATBNTED JUNE 19, 1906..,-

APPLICATION FILED JUNE 19,1905.

3 SHEETS-:SHEET 2.

PATENTED JUNE 19, 1906.

G, P. ROPER. SELV'AGE MOTION FUR LOOMS.

APPLIOATION FILED JUNI: 19 190s 3 SHEETS-SHEET 3.

l ma@ e NITED STATES `FinitiniNTv FFIC.

CHARLES F. ROPER, HOPEDA-LE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPO- RATION OF MAINE.

sELvAGE-MOTION'EQR Looms.

` Specification of Letters Patent.

Patented June 1e, A190e.

Application 1ed June 19,1905. Serial No. 265,834.

To @ZZ whom t muy concern:

Be it known thatI, CHARLES F. ROPER, a citizen of the United States, and a resident of Hopedale, county of Worcester, State of` selvag'e-motion for looms, whereby a firm and uniform selvage is produced, the selvage-motion being separate from and independent of the main-shed-forming mechanism.

In the present embodiment of my invention I provide two harness members for the selvage-warps at each side of the loom, and each pair is so connected that a positive motion is imparted to oppositely reciprocate the selvage-harnesses or harness members, a single actuating device operating the two shedforming mechanisms for each selvage.

The actuating device is of novel construction and it is located in a readily-accessible position yet well out of the way of other parts of the loom mechanism, and herein such actuating device is o erated by' a direct drive from the loom crank-shaft. I have also provided means to cause the planes of the selvage-shed to be-substantially in alinement with the planes Vof the main shed, thereby preventing accidents which are apt to occur by diversion of the shuttle from its properv path, due to a variation between the main and selvage shedopenings.

The selvage-motion herein shown is more particularly adapted for use with metallic heddles, which also serve as warp stop-motion controlling-detectors, whereby the loom may be' stopped automatically upon breakage or failure of a selvage-warp 5 but such heddles form no part of my present invention, as thedsame are well known vand .extensively use 'My present invention is not restricted to such use, however, as otherforms ofselvageharnesses may be employed in connection with my novel-selvage-motion.

The various novel features of my inven; tion willbe fully described in the subjoined specication and particularly pointed out in the following claims.

Figure 1 is a rear elevation of a suiiicient portion of a'loom to be understood, the arch being centrally broken out to save space and with one practical embodiment of my present invention applied p thereto. Fig. 2 is a left-hand elevation of the parts at thewright of the section, line 2 2, Fi 1 Fig. 3 is a front face view of the actuator For the selvage-shedforming mechanisms, showing the crossed cam-path thereon. Fig. 3a is a face view of one of the switch-followers, to be referred to. Fig. 4 is an inner side elevation of the drivinggear which effects rotation of the actuator,

' the opposite side elevation being shown in Fig. 2f Fig. 5 is an enlarged detail in rear elevation of oneiof the overheadconnections for and from which a pair of the selvage-harnesses are suspended, showing the means by which a differential movement of such harnesses is effected. Fig. Gis a right-hand end elevation thereof, viewing Fig. 5 from the right and With the loom-arch in section. Fig.

7 is a rear elevation and partial section of a modified form of actuator and-its driving means with a portion ofthe adjacent mechanism of the selvagge-motion.V Fig. Sis an end elevation at the right ofthe line 8 8, Fig. 7, omitting portions ofy the transmitting means and Fig. 9 is a view of the camathY modified form of the actuator develope .A

The arch A of the loom-frame may support in usual manner the main harnessframes of any suitable construction. V(Not herein shown as they form no part of my present invention.) The-front harness of the main set has in practice a shorter stroke than the one or more behind it, inorder that the shed-opening may be the same Whether the front harness is up or down, as is well known to those skilled in the art, and herein I have provided means to give a longer stroke to the back selvage-harness of each pair, in order that the planes of the selvageshed may be substantially in alinement with the planes of the main shed, as will be described. I have herein used two oppositelymovable and vertically-reciprocating harness IOC members for the selvage-warps arranged at each side of the main-shed-forming mechanism. V

Referring to Fig. 1, the rods f, l), andf, b', each having a lateral inwardly-projecting lug 1 to support one or more heddles 2 for the selvage-warps, constitute the selvage-harnesses or harness members, the lugs 1 having lips or flanges 3 to prevent removal of the heddles, which latter may be made as thin flat metallic strips provided with warp-eyes and operating substantially as described in United States Patent to Draper, No. 729,046, dated May 26, 1903.

In practice the lower ends of the rods may slide vertically in suitable guides, such as are shown in said patent, the rods being sufficiently stiff and rigid to properly support the heddles. l have provided a novel overhead connection for each pair of harness members with means to impart a differential reciprocation thereto, and as the connections are alike only one will be described in detail. At proper points the arch A has bolted to its ower flange two brackets 4, (see Figs. 5 and 6,) each having two parallel sleeve-like bearings 5 and 6 transverse to the arch, the longer upper bearing 5 extending forward beyond the lower bearing to properly position the two selvage-harnesses. A rocker 7, having a rigidly-attached shaft 9, is supported by the bearing 5, the shaft rocking therein, the boss 7 X, Fig. 6, being at the front end of such bearing, and a segment-gear 11 is secured to the shaft at the inner end of the bearing, the upper end of the rod f being pivotally connected by a stud 13 with the rocker 7. A similar rocker 8 and its attached shaft 10 is supported by the bearing 6, the boss 8X being at one end thereof and at its other end a segment-gear 12 is secured to the shaft and meshes with the gear 11, a pin 14 on the rocker pivotally connecting it with the rod b of the back selVage-harness. The gear 12 is of less radius than the gear 11, so that there will be a difference in the extent of angular movement of the two rockers, the rocker 8 having the greater amplitude of movement, so that the back selvage-harness connected therewith will be given the longer stroke. This differential movement of the two selvage-harnesses of a pair causes the planes of the selvage-shed to be substantially alined with the planes of the main shed, as and for the reasons hereinbefore set forth.

From the foregoing it will be evident that the selvage-harnesses are suspended from the rockers and that the latter positively raise and depress them in the present embodiment of my invention, and it will also be manifest that the rockers 7 and 8 will move in opposite directions by or through the positive gearing connecting them.

I have herein shown the rockers 8 for the back harness members as operatively connected with the transmitting means between the two selvage-shed-fornnng mechanisms and the actuator common to both, and to seas-s that end each gear 12 has secured to or forining part of it a crank-arin 15, provided with a crank-pin 16, which passes through a hole in one end of a longitudinally rigid link 17 for the right-hand overhead connection, viewing Fig. 1. A similar but shorter link 17 X is pivotally connected with the crank-arm 15 of the overhead connection at the left, Fig. l and the outer ends of the two links are pivotally connected with the upper ends of upright levers or vibrators 18 18X, fulcrumed on the arch at 19 19X, respectively.

The vibrators are substantially alike, as shown, and their fulcra are in parallelism, their lower ends being provided with what l have termed switch-followers 2() 20X, (shown by dotted lines Fig. 3,) a full-face view of one of the followers being shown in Fig. 3a. Each follower is shown as crescentshaped, and it is pivotally mounted on. its vibrator, so that it can change its angular position with relation thereto as it follows the Gain-path ofthe actuator, to be described.

ln the embodiment of my invention illustrated in Figs. 1 to 6 the actuator is shown as a disk 21, rotatably mounted on. a stud 22, projecting rearward from the arch a short distance above the usual journal-box 23 for the crank-shaft C, the disk having on its front face a crossed cam-path, (shown in Fig. 3 as comprising inner and outer lobes or segments 24 25,) the crossing from one to the otherpart of the path being between the horns 26 27 and the opposed points 2S 29. ln the drawings the follower 20 is in the inner lobe 24 and nearest the center of the actuator, and by or through the transmitting means the righthand overhead connection, Fig. 1, is so positioned that the front selvage-harness is up and its fellow harness down` At the same time the follower 2() is in the outer lobe 25 of the cam-path farthest from the center, and through the other set of transmittingmeans and the left-hand overhead connection (see Fig. 1) the corresponding front selvage-liarness is down and its fellow, the back harness, is up. As the actuator is rotated in the direction of arrow 30, Fig. 3, the switch-follower 20 will be deflected by the point 29 and will cross over and enter the inner lobe 24 between the point 2S and horn 26, thereby gradually moving toward the center to reverse or change the selvage-shed governed by the overhead connection at the left, viewing Fig. 1. While this movement of the 'follower 20 is taking place, the follower 20 dwelling as it traverses the lobe 24 to the opening between the point 28 and the horn 27, and when the leading end of the follower emerges and crosses the outer lobe it is deflected by the point 29 and turned into the outer lobe 25 between the said point 29 and the horn 26, the follower 20 thereby being moved away from the center of the actuator to change the selvage-shed at the right, Fig.

IOO

TIO

. revolution imparted to itfor every two revo-v lutions of the crank-shaft C. I accomplish this in the. present instance by a direct drive. from said crank-shaft, and owing to the position of the actuator with relation to the jour- 1. v The followers thus act as Vswitches and;

traverse the complete cam-path, crossing from the outer lobe to the inner lobe, and vice versa, the proper vibratory motion and ldwell being givento the vibrators 18 18 in order that the selvage-sheds shallbe changed 1 and held open in the required sequence.

The actuator iscommon to both selvage- -shed-forming mechanisms and operatively ,connected therewith by separate or independent transmitting means, as has been described, theactuator having one complete nal-box 23 I have devised a peculiar form of drivingear. The periphery of the disk 21 is provi ed witha series of skew-teeth 31, and twenty-four of such teeth are made in I this instance, the faces 32 being inclined from ,spirally arranged and also skewe 4base to tip in thedirection of their length Figs.- 1 and 3, and being skewed or diagonal across the periphery of the disk, Fi 2. A coperating driving-gear is securedg to the crank-shaft C at the outer end of the journalboX 23, Fig. 1, and the teeth of such ear rIae e spiral and skew arrangement'of the teeth 33 on the conical hub 34 is perhaps shown most -clearly in Fig. 4, while the shape of the faces Aengaging the face of the adjacent actuatortooth. There are half as many driving-teeth- 33 as actuator-teeth 31, so that the actuator is rotated once for every two revolutions of the crank-shaft,'as before stated. Inasmuch as the faces 35 act from their lowest to theiry highest points upon the actuator-teeth it will be manifest that the rotative movement of the driving-gearwill betransmitted to the periphery of the actuator through the teeth 31 to rotate the actuator,the skew of the two sets of teeth 31 and 33 providing the requisite clearance. I thus secure .a direct drive from theA loom crank-shaft and without disturbing the shaft-box at that side of the loom, and by means of a single actuator I operate both pairs of harness members for the selvage-warps positively and independently.

A modified arran ement is shown in Figs. 7 to 9, inclusive, inclguding a different form of actuator and different driving-gearing between it and thecrank-shaft. A bracket 36 is boltedto the loom sdeand projects back of the foot of the arch, Fig. 8 to receive a short rotatable shaft' 37, parallel tothe crank- -edly secured to the crank-shaft, and on the inner end of the shaft 37 the actuating-cam is secured, herein shown as a cylinder 40, having'two parallel portions 41 42 crossing each lother between the horns 43 44 and the points The bracket 36 has an upturned arm 47, carrying a fulcrum-stud 48, on which are mounted the two vibrators 49 and 49X, the former bein connected by a link, as 17, Fig. 7, with the arther overhead connection and the latter by link l17 with the nearer one. (Shown in Fig. 7.) Said vibrators are provided with switch-followers 50 50X, which are located on opposite sides of the cylinder 40, (see Figs. 7 and 8,) the foot ofthe vibrator 49 being bent for the purpose. The followers cross from one part of the cam-path to the other as the actuator rotates in a manner readily understood to rock the vibrators in proper time and order. The point 45 deiiects follower 50 from the part 41 of the cam-path to the other part 42 through the opening between the horn 43, and the point 46 deilects v the follower 50 from the part 42 to the other part 41 of the cam through the opening between horn 44 and point 45, the crossin action and the operation of the switch-fol owers being substantially as has been previously described. Ineither case the actuator is a pattern-surface so constructed and arranged that it governs the movement ofthe selvageharnesses.

Various changes may be made in the details of construction and arrangement by those skilled in the lart without departing from the spirit and scope of my invention, one practicalembodiment whereof is herein shown and described. Y

Having fully described my invention, what I claim a's new, and desireto secure by Letters Patent, ist 1. VIn a selvage-motion for looms, in com- IOO IIO

bination, two selvagge-harnesses at each side of the loom, a connection between and to cause opposite reciprocation of the harnesses ofeach pair, a common actuator, and separate transmitting means between it and the two connections.

2. In a loom, a shed-forming mechanism for each selvage, including two positively-` connected -and oppositely-movable harness members for the selvage-warps, combined with a common actuating device, and separate transmitting means between it and the two shed-forming mechanisms to operate the same.. 1

3. In a loom, a shed-forming mechanism 'for each'selvage, including two positivelyconnected and oppositely-movable harness members for the selvage-warps, and means to cause aY differential movement of the con- ISO f4 saess nected harness members, combined withY a common actuator for said mechanisms, and separate transmitting means between the latter and the actuator.

4. In a selva e-motion for looms, in combination, two se vage-harnesses at each side Yof the loom, a positive overhead connection between and to cause opposite reciprocation of the harnesses of each pair, an actuator, and independent, positively-actin transmitting means between it and each o the two overhead connections. p

5. In a selvage-motion for looms, in combination, two selvage-harnesses at each side oi the loom, a positive overhead connection between and from which the harnesses oi each pair are suspended, each connection including means to cause opposite reciprocation of the adjacent harnesses and impart a greater stroke to the back harness, an actuator, and separate transmitting means between it and each connection.

6. In a loom, a shed-forming mechanism for each selvage, including two oppositelymovable harness members for the selvagewarps, combined with actuating means including a single cam and separate, positivelyacting transmitting devices intermediate it and the two shed-forming mechanisms, to operate the same.

7. In a loom, separate shed-forming mechanism for each selvage, means to cause the planes of the selvage-sheds to substantially coincide with the planes of the main sheds, and a common actuating-cam operatively and independently connected with each of said selvage mechanisms.

8. In a loom, separate shed-forming mechanism for each selvage, a common actuator, and a separate transmitting connection between it and each of said selvage mechanisms.

9. In a selvage-motion for looms, in combination, two selvage-harnesses at each side of the loom, a positive, differential connection between each pair of harness, to effect their movement in opposite directions with strokes of dierent length, a common actuator, and transmitting means between it and the two connections, to operate the same.

10. In a loom, separate shed-forming mechanism for each selvage, including oppositelymovable. harness members for the selvagewarps, and means to cause a dii'ierential reciprocating movement of the said harness members to thereby bring the planes of the selva e-sheds into substantial alinementwith the p anes of the main shed, combined with an actuating-cam common to both mechanisms, and separate transmitting connections between the latter and said cam.

11. In a loom, separate shed-forming mechanism for each selvage, including opposilrly- .movable harness members for the selvage warps, comblned with an actuatingmaln hav ing a crossed cam-path, and connectionslw tween the said mechanisms and the cam, each connection including a switch-follower coperating with the cam-path.

14. In a loom, separate shed-formingmeehanism for each selvage, combined with an aetuating-cam, two vibrators cooperating therewith, and a link operatively connecting each vibrator with one of said mechanisms.

15. In a selvage-motion for looms, in combination, two oppositely-movable harness members at each side of' the loom, for the sclvage-warps, a pair of positively-connected and oppositely-moving rockers for and from which each pair of harness members is suspended, an actuator, and separate operating connections between it and one of the rockers of each pair, to therethrough ell'ect reciprocation of the harness members suspended therefrom.

16. In a selvage-motion for looms, in eombination, two oppositely-movable harness members at each side of the loom, for the selvage-warps, an overhead rocker for and from which each harness member is sus )ended, gearing connectino' the adjacent roclers, to e'liect their angu ar movement oppositely and thereby reciprocate the connected harness members, an actuating member, and connections between it and. each pair of rockers, said connections including links pivotally attached to one rocker of each pair.

17. In a selvage-motion for looms, a pair of rockers at each side of the loom, gearing to effect opposite and `diliierential movement of the rockers of each pair, a harness member Jfor the selvage-warp positively connected with each rocker, an actuatingcam having a crossed cam-path, two vibrators provided with followers cooperating with the campath, and a link connecting each vibrator with one of the rockers of a pair, to eii ect oposite reciprocation of the adjacent pairs of iiarness members with a differential stroke.

18. The combination, with two selvageharnesses at each side of the loom, and an overhead connection between each pair, comprising two rocking members geared together to move oppos1tely and from which ICO lIO

ythe harnesses are suspended, a pattern-sur- `compr1sing two rocking members, from W 'ch the harnesses-are suspended anddifferenimpart a differential reci rocation to their harnesses, a pattern-sur ace,v and separate transmitting means between it and the overhead connections, tov operatethe harnesses therethrou h. f

20. Ina oom,acrank-shaft,separateshedforming mechanismL for each selvage, an actuator common to both mechanisms andoperatively connected` therewith, and meshing gears fast with relation to the crank-shaft and actuator, respectively, to rotate the latter;

2 1. In a loom, a crank-shaft, separate shedl formingmechanism for each selvage, an actween the crank-shaft and cam I tuating-caml forl and operatively and separately 'connected' with both of said mechanisms, and a' directdriving yconnection be- '22.- In a loom, se arate shed-forming mebhanism foreach se vage, an actuatingcam havinga continuous, crossed cam-path, two vibrators eachconnected' withjone of --said mechanisms7 aswitch-follower on'. each vibrator to cooperate with rthe cam-pathyand v means to rotate the cam, each follower travversing the entire cam-path forevery two frevolutionsof tho cam; 1

' 23. Ina loom, separate shed-forming mechanism for each selvage, an actuatingcam having a continuous, crossed cam-pat two vibrators each connected with one of said mechanisms, a follower on each vibrator to coperate with the cam-path, and means f to cause each follower to cross from one to the other ortion of the cam-path to traverse the entire ength thereof. tially geared together to move oppositely and 24. In a loom, separate shed-'forming mechanismfor each selvage, a common actuator for said mechanisms, consisting of a peripherally skew-toothed disk having a camgroove on its face composed of inner and outer communicating lobes, a continuouslyrotating driving gear having spirally arranged s'kew-teeth to' mesh with and rotate said disk, and connections lbetween the latter and the selvage mechanisms,'each connection including a vibrator and a switch-follower to traverse the cam-groove and ass automatically from one to the other obe thereof, .i

'25. In a loom, separate shed-,forming mechanism for veach selvage, a common actuator, and operative connections rvbetween said mechanismsv and actuator, whereby the separate selvage mechanisms shall be operated at different times. p

In testimony whereof I have signed vmy name to this specification in the two subscribing witnesses.

Witnesses?,v v iGEoRGE OTIs 'DRAPEia f EaNEsr W.WooD.

presence of ,cHARLEsn'ROPER 

